144901 (2004 WG1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5219161608 ± 1.35e-08
Semi-major axis (a)1.6399046216 AU ± 3.63e-09
Inclination (i)13.03627510° ± 4.26e-06
Long. of Asc. Node (Ω)41.97768639° ± 6.91e-06
Arg. of Perihelion (ω)232.48782326° ± 7.83e-06
Mean Anomaly (M)98.80911219° ± 1.27e-05
Mean Motion (n)0.4693365661°/day ± 1.56e-09
Perihelion dist (q)0.78401190 AU ± 2.22e-08
Aphelion dist (Q)2.49579735 AU ± 2.28e-08
Orbital Period2.10004154 yr ± 6.97e-09
Physical Parameters
H (abs. magnitude)17.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.381″
Uncertainty0
Orbit TypeApollo
MOID0.055629 AU
Observations Used626
Radar Obs Used4
Oppositions1
Arc Total2004-2006
First Observation Used2004-09-22
Last Observation Used2025-12-25
Observations (714)
Date Type RA Dec Mag Band Observatory
2004-12-15 20:26:07 C 03 13 58.60 +27 30 24.1 c 246
2004-12-15 20:28:00 C 03 13 58.52 +27 30 24.2 c 246
2004-12-15 20:29:36 C 03 13 58.48 +27 30 23.5 c 246
2004-12-15 20:30:52 C 03 13 58.49 +27 30 22.8 c 246
2004-12-15 20:32:02 C 03 13 58.42 +27 30 23.6 c 246
2004-12-15 20:34:03 C 03 13 58.21 +27 30 23.4 c 246
2004-12-15 20:37:09 C 03 13 58.12 +27 30 22.4 c 246
2005-01-16 01:38:15 C 02 59 56.70 +26 25 47.3 o 715
2005-01-16 03:06:37 C 02 59 57.22 +26 25 45.7 o 715
2005-12-08 12:21:13 C 11 46 24.66 +17 28 41.8 d 291
2005-12-08 12:27:42 C 11 46 25.14 +17 28 40.5 d 291
2005-12-08 12:33:51 C 11 46 25.56 +17 28 39.6 d 291
2005-12-31 11:44:55 C 12 25 32.75 +16 02 55.9 c 711
2005-12-31 11:58:01 C 12 25 33.68 +16 02 54.5 c 711
2005-12-31 12:11:13 C 12 25 34.59 +16 02 53.2 c 711
2006-01-04 11:36:23 C 12 32 16.29 +15 54 03.3 r 703
2006-01-04 11:44:14 C 12 32 16.90 +15 54 03.2 r 703
2006-01-04 11:52:04 C 12 32 17.26 +15 54 05.9 r 703
2006-01-04 11:59:58 C 12 32 17.91 +15 54 02.0 r 703
2006-01-28 11:18:40 C 13 12 15.61 +15 51 45.5 r 448
2006-01-28 11:28:51 C 13 12 16.26 +15 51 46.4 r 448
2006-01-28 11:39:40 C 13 12 16.98 +15 51 47.5 r 448
2006-01-30 12:15:56 C 13 15 38.10 +15 56 21.2 c 711
2006-01-30 12:28:35 C 13 15 38.91 +15 56 22.2 c 711
2006-01-30 12:41:03 C 13 15 39.78 +15 56 23.2 c 711
2006-02-01 09:01:23 C 13 18 43.95 +16 01 16.2 r 703
2006-02-01 09:14:09 C 13 18 44.71 +16 01 18.2 r 703
2006-02-01 09:26:53 C 13 18 45.61 +16 01 19.1 r 703
2006-02-01 09:39:37 C 13 18 46.40 +16 01 20.8 r 703
2006-02-04 10:02:06 C 13 23 46.07 +16 10 53.8 o 704
2006-02-04 10:41:13 C 13 23 48.68 +16 10 58.1 o 704
2006-02-04 11:26:38 C 13 23 51.65 +16 11 05.5 o 704
2006-02-09 11:00:19 C 13 32 08.88 +16 31 10.8 o 699
2006-02-09 11:39:49 C 13 32 11.51 +16 31 19.3 o 699
2006-02-09 12:19:19 C 13 32 14.18 +16 31 27.2 o 699
2006-02-09 12:58:49 C 13 32 16.74 +16 31 34.3 o 699
2006-02-22 08:43:13 C 13 54 11.46 +17 50 33.6 18.4 c 704
2006-02-22 09:19:35 C 13 54 14.00 +17 50 45.8 19.1 c 704
2006-02-22 09:37:49 C 13 54 15.29 +17 50 52.1 19.0 c 704
2006-02-22 09:56:04 C 13 54 16.55 +17 50 57.6 18.6 c 704
2006-02-24 09:34:07 C 13 57 48.67 +18 07 02.3 r 703
2006-02-24 09:46:42 C 13 57 49.53 +18 07 08.1 r 703
2006-02-24 09:59:22 C 13 57 50.40 +18 07 12.0 r 703
2006-02-24 10:12:05 C 13 57 51.33 +18 07 16.7 r 703
2006-02-24 11:22:39 C 13 57 56.30 +18 07 41.6 r 703
2006-02-24 11:26:50 C 13 57 56.59 +18 07 42.9 r 703
2006-02-24 11:30:53 C 13 57 56.88 +18 07 44.7 r 703
2006-02-24 11:34:55 C 13 57 57.13 +18 07 46.0 r 703
2006-02-25 07:59:45 C 13 59 30.07 +18 14 59.6 o 699
2006-02-25 08:39:11 C 13 59 32.96 +18 15 14.0 o 699
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2006-04-11 09:55:00 114230.3266 2 Hz 2380 -1 -1
2006-04-11 10:52:00 91075429.82 3 us 2380 -1 -1
2006-04-11 10:52:00 111851.1004 2 Hz 2380 -1 -1
2006-04-13 09:21:00 64713.2365 2 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)